public void SetBluRayTitleInfoExternalSubtitleForAdd(BluRaySummaryInfo bluRaySummaryInfo)
{
_currentBluRaySummaryInfo = bluRaySummaryInfo;
_isAdd = true;
lblExternalSubtitleEAC3ToTrackId.Text = string.Empty;
_currentMKVMergeItem = new MKVMergeItem() { Compression = "determine automatically", DefaultTrackFlag = "no", ForcedTrackFlag = "no" };
}